Color

#4f4fa1

#4f4fa1
hex#4f4fa1
rgbrgb(79, 79, 161)
hslhsl(240, 34%, 47%)
oklchoklch(0.471 0.129 280.2)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.0983

Colors that go with #4f4fa1

Charcoal, Steel Blue and Amber lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#a1a14f

#4f78a1 · #784fa1

#a14f4f · #4fa14f

Split-complementary

Open in tool →

#a1784f · #78a14f

#a14f78 · #a1a14f · #4fa178

Contrast

#4f4fa1 as textRatioAAAA largeAAAFix
Aaon white
7.08:1passpasspassPasses AAA — no fix needed.
Aaon black
2.97:1failfailfail
  • AA: use #6f6fb8 as the text (4.64:1)
  • AAA: use #9292c9 as the text (7.18:1)
  • AA: or shift the background to #cfcfcf (4.55:1)
  • AAA: or shift the background to #ffffff (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4f4fa1 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #4f4fa1
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

›analyze #4f4fa1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4f4fa1-a19cc4-df994e-251f2d-e9edf1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md